Lewis Hamilton didn't fare quite as well as McLaren team-mate Jenson Button in qualifying for the Italian Grand Prix, the F1 points leader lining up only fifth in a typically competitive session.
Having opted for a different set-up to Button – ditching the F-duct and running with lower downforce - the 2008 world champion conceded he had probably made a mistake.
Pipped at the end by closest championship rival Mark Webber, Hamilton's best lap of 1min 22.623secs was more than half a second off the sister McLaren.
“I'm a little bit disappointed – it would appear that we took the wrong route by running without the F-duct this weekend,” Hamilton noted, “I just didn't have the downforce today, and the car was sliding in the corners – I couldn't push any harder because the car just wouldn't give me any more.
“For tomorrow's race, I'll have good top speed, but the car is going to be sliding through the corners, so I won't be able to follow closely enough through the corners to try and pass, so it'll be tough. But I have to congratulate Jenson on doing a great job.
“Today wasn't my best qualifying performance of the season, but we'll still push like crazy tomorrow and fight for some good points from the third row. It looks like it'll be a tough race.”